I live in a townhouse, end-unit. Our stair case is on the side of the house and we have stair step cracks in our bricks. It looks like the previous home owners had sealed the crack but the seal has cracked and is exposed. Its hard to tell if it was a cheap/not well done seal, if the home is moving/other serious issue or if the heat may have caused damage? Not sure but looking for an assessment on the issue and how severe. Thank you!